package com.g24.partychecker;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;

public class DBAdapter 
{

    public static final String KEY_NAAM = "naam";
    public static final String KEY_SUBNAAM = "subnaam";
    public static final String KEY_GENRE = "genre";
    public static final String KEY_DATUM = "datum";
    public static final String KEY_TIJD = "tijd";
    public static final String KEY_ADRES = "adres";
    public static final String KEY_PLAATS = "plaats";
    public static final String KEY_REGIO = "regio";
    public static final String KEY_WEBSITE = "website";
    public static final String KEY_INFO = "info";
    public static final String KEY_MAPLAT = "maplat";
    public static final String KEY_MAPLON = "maplon";
    public static final String KEY_ROWID = "_id";

    private static final String TAG = "DBAdapter";
    private DatabaseHelper mDbHelper;
    private SQLiteDatabase mDb;

    /**
     * Database creation sql statement
     */
    private static final String DATABASE_CREATE_EVENTS = "CREATE TABLE Events (_id INTEGER PRIMARY KEY AUTOINCREMENT," +
    													" naam TEXT NOT NULL, subnaam TEXT, genre TEXT, datum DATE, tijd TEXT, adres TEXT," +
    													" plaats TEXT, regio TEXT NOT NULL, website TEXT, info TEXT, maplat TEXT, maplon TEXT);";
    
    private static final String DATABASE_NAME = "pchecker.db";
    private static final String DATABASE_TABLE = "Events";
    private static final int DATABASE_VERSION = 2;

    private final Context mCtx;

    private static class DatabaseHelper extends SQLiteOpenHelper 
    {

        DatabaseHelper(Context context) 
		{
            super(context, DATABASE_NAME, null, DATABASE_VERSION);
        }

        @Override
        public void onCreate(SQLiteDatabase db) 
		{
            db.execSQL(DATABASE_CREATE_EVENTS);
        }

        @Override
        public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) 
        {
            Log.w(TAG, "Upgrading database from version " + oldVersion + " to "
                    + newVersion + ", which will destroy all old data");
            db.execSQL("DROP TABLE IF EXISTS notes");
            onCreate(db);
        }
    }

    /**
     * Constructor - takes the context to allow the database to be
     * opened/created
     * 
     * @param ctx the Context within which to work
     */
    public DBAdapter(Context ctx) 
    {
        this.mCtx = ctx;
    }

    /**
     * Open the notes database. If it cannot be opened, try to create a new
     * instance of the database. If it cannot be created, throw an exception to
     * signal the failure
     * @return 
     * 
     * @return this (self reference, allowing this to be chained in an
     *         initialization call)
     * @throws SQLException if the database could be neither opened or created
     */
    public DBAdapter open() throws SQLException 
    {
        mDbHelper = new DatabaseHelper(mCtx);
        mDb = mDbHelper.getWritableDatabase();
        return this;
    }

    public void close() 
    {
        mDbHelper.close();
    }


    /**
     * Create a new note using the title and body provided. If the note is
     * successfully created return the new rowId for that note, otherwise return
     * a -1 to indicate failure.
     * 
     * @param title the title of the note
     * @param body the body of the note
     * @return rowId or -1 if failed
     */
    public long createEvent(String naam, String subnaam, String genre, String datum, String tijd,
    		String adres, String plaats, String regio, String website, String info, String maplat, String maplon) 
    {
        ContentValues initialValues = new ContentValues();
        initialValues.put(KEY_NAAM, naam);
        initialValues.put(KEY_SUBNAAM, subnaam);
        initialValues.put(KEY_GENRE, genre);
        initialValues.put(KEY_DATUM, datum);
        initialValues.put(KEY_TIJD, tijd);
        initialValues.put(KEY_ADRES, adres);
        initialValues.put(KEY_PLAATS, plaats);
        initialValues.put(KEY_REGIO, regio);
        initialValues.put(KEY_WEBSITE, website);
        initialValues.put(KEY_INFO, info);
        initialValues.put(KEY_MAPLAT, maplat);
        initialValues.put(KEY_MAPLON, maplon);

        return mDb.insert(DATABASE_TABLE, null, initialValues);
    }

    /**
     * Delete the note with the given rowId
     * 
     * @param rowId id of note to delete
     * @return true if deleted, false otherwise
     */
    public boolean deleteEvent(long rowId) 
    {

        return mDb.delete(DATABASE_TABLE, KEY_ROWID + "=" + rowId, null) > 0;
    }
    
    public boolean deleteAllEvents() 
    {
        return mDb.delete(DATABASE_TABLE, null, null) > 0;
    }

    /**
     * Return a Cursor over the list of all notes in the database
     * 
     * @return Cursor over all notes
     */
    public Cursor fetchAllEvents() 
    {

        return mDb.query(DATABASE_TABLE, new String[] {KEY_ROWID, KEY_NAAM,
                KEY_REGIO, KEY_DATUM}, null, null, null, null, null);
    }

    /**
     * Return a Cursor positioned at the note that matches the given rowId
     * 
     * @param rowId id of note to retrieve
     * @return Cursor positioned to matching note, if found
     * @throws SQLException if note could not be found/retrieved
     */
    public Cursor fetchEvent(long rowId) throws SQLException 
    {

        Cursor mCursor =
            mDb.query(true, DATABASE_TABLE, new String[] {KEY_ROWID,
                    KEY_NAAM, KEY_SUBNAAM, KEY_REGIO, KEY_GENRE, KEY_DATUM, KEY_TIJD, KEY_ADRES, KEY_PLAATS, KEY_WEBSITE, KEY_INFO}, KEY_ROWID + "=" + rowId, null,
                    null, null, null, null);
        
        if (mCursor != null) 
        {
            mCursor.moveToFirst();
        }
        return mCursor;

    }

    /**
     * Update the note using the details provided. The note to be updated is
     * specified using the rowId, and it is altered to use the title and body
     * values passed in
     * 
     * @param rowId id of note to update
     * @param title value to set note title to
     * @param body value to set note body to
     * @return true if the note was successfully updated, false otherwise
     */
    public boolean updateEvent(long rowId, String naam, String regio) 
    {
        ContentValues args = new ContentValues();
        args.put(KEY_NAAM, naam);
        args.put(KEY_REGIO, regio);

        return mDb.update(DATABASE_TABLE, args, KEY_ROWID + "=" + rowId, null) > 0;
    }
}
